Maximum allowed core and shader frequencies vary between systems. I've never been able to overclock my NVidia GeForce 320M (MacBook Pro 2010 13" 2.66 GHz) beyond 585 / 1235 MHz without stability issues when gaming. MSI Afterburner is a good choice for overclocking in Windows.
Try reducing your frequencies somewhat and you should be fine. I don't recall anyone having been able to raise their core voltage to 644 MHz: That's a 43% increase over the 450 MHz default frequency! With 585 / 1235 MHz settings I was able to achieve a 3D Mark 06 score of 5400, which is pretty impressive for an IGP. That's why I've stayed away from the current 13" models, and even the upcoming HD 4000 in Ivy Bridge probably won't top that score by enough to warrant an upgrade.
thank you for your opinion!!=)
hmm...i was afraid of that...damn it
so now my problem is a not so good system compared to the original one...btw my mbp it's the same of yours and i too prefer this one over the new ones because of de GPU!
before i took it to the warranty i had no problems with that OC for sure! i too was amazed by the OC i could do! precisely because i've never seen anybody posting a OC like that on the net! i ran many tests with 3Dmark 06 to achieve those clocks with safety.
when i started to see artifacts on the screen i new it was it's limit so i decreased the core frequencies to those ones(btw i use to do the OC with the core/shader linked so the are in sync) and i never had problems until now,but the strange thing is that with these new hardware, when i was testing(this time with 3Dmark advantage) i only start to saw the artifacts on the screen ate the same frequencies of the other tests with the first system before this new one.
so i don't understand how can this new GPU/system not be able to support the OC i do...(btw the score in the 3Dmark advantage is 8451 points and i have been able to play assassin's creed brotherhood without that freezing issue (until now...), just the rest of the games like fable 3 and medal of honor 2010 have failed...)
when the freeze happens the core clock drop below to 450 witch is it's original top frequency and the shader to 810 but the tit's top frequency is 950.and to put everything back to normal i need to rester the computer...
there was this guy who told me that it could be an automatic reset to the drivers or GPU... i already re-installed the drivers,tried the original ones,reinstalled the OC program and even the windows!but nothing seems to help...the guy who told me that, said also that this problem of freezing usually happens to him when he is testing voltages on GPU/CPU/MEM. etc...=/
so, could this be a voltage problem? i also read about people that were getting unstable OC because of insufficient voltage...the voltage of mine is 9.000v
so that's all for now from me guys,i hope you can give me a little help with this!
thanks again ssn637!
